Furnace Maintenance Services

Diablo, CA

Enjoy a warm, safe home all winter. We offer seasonal furnace tune-ups, fast priority service, and honest expert care.

Fast and Reliable

Fast & Reliable

We arrive quickly when you need us most.

Expert Technicians

Expert Technicians

Expertly trained to handle any issue.

Upfront Pricing

Upfront Pricing

Honest, competitive rates with no surprises.

Satisfaction

Satisfaction

We stand behind every job completely.

Fast and Reliable

Fast & Reliable

We arrive quickly when you need us most.

Expert Technicians

Expert Technicians

Expertly trained to handle any issue.

Upfront Pricing

Upfront Pricing

Honest, competitive rates with no surprises.

Satisfaction

Satisfaction

We stand behind every job completely.

Expert Furnace Maintenance Services – Diablo, CA

What Our Heating Maintenance Includes?

Our 23-Point SmartIQ Tune-Up inspects every component of your heating system for safety and efficiency.

Benefits of Regular Furnace Maintenance

Regular furnace maintenance keeps your heating system reliable, efficient, and ready for winter.

We Always Put Quality Service First.

Having heating or cooling trouble? Smart Heating and Air Conditioning is ready to help. We quickly diagnose and repair your system so you can stay comfortable. Call (925) 217-7982 now to schedule an appointment!

Protect Your Comfort Before Summer Hits.

Don’t wait for your furnace to struggle. Get your heating ready now. Ask about our Diablo membership plans for year-round savings, priority service, and ongoing peace of mind.

Why Diablo Homeowners Trust Smart Heating & Air Conditioning

We take pride in serving Diablo families with honest care, expert workmanship, and dependable comfort.

5Star Reputation

Locally Owned & Operated

Based near Diablo, we know the area, the climate, and the needs of our local community.

Locally Owned and Operated

Licensed, Bonded & Insured

Your home is always in safe, expert hands with our skilled HVAC professionals.

Licensed, Bonded and Insured

Same-Day Service Available

We know urgent heating issues cannot wait, and we will never make you wait long.

Same Day Service Available

Upfront, Honest Pricing

No hidden surprises—just simple, honest upfront pricing and high-quality work.

Upfront, Honest Pricing

5-Star Reputation

We are truly proud of our great customer reviews on Google, Yelp, and Nextdoor.

Save with SMART Heating & Air Conditioning Coupons

Save big on HVAC and home services with our exclusive discounts. Check offer details and reference your coupon when booking to lock in your deal!

AC tuneup offer

$75mo.

New Gas Multi-speed Furnace Installed

*Limit one per household. Some restrictions may apply.Cannot combine offers, Expires 12/31/2026

$79Only

Furnace
Tune-Up

*Limit one per household. Some restrictions may apply.Cannot combine offers, Expires 12/31/2026

HVAC repairs offer

NEW

Home Comfort System Easy Payment Plans Available

*Limit one per household. Some restrictions may apply.Cannot combine offers. Expires 12/31/2026

Trusted By Your Neighbors Peace of Mind with Every Service

Posted on Google Google
Kristi Elliott profile picture
Kristi Elliott
17 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Smart Heating and Air replaced our aging HVAC system and helped us work through some challenging ductwork issues along the way. They were quick to respond and always showed up on time. They also shared photos and videos of our systems, which helped a lot when walking us through our options. Every person we’ve dealt with has been friendly, professional, and knowledgeable, and made us feel like family. Their pricing is fair, their warranty coverage is solid, and we haven’t found another contract that comes close to theirs. 100% we would trust our home with Smart Heating and Air the next time we have HVAC needs.
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Matthew Santelises profile picture
Matthew Santelises
12 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Jesus with Smart was awesome. He was thorough and explained what he did. He also showed me pictures and videos of my AC unit and furnace. I appreciate the great service he provided and the effort he gave. Great work!
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Dana Fuller profile picture
Dana Fuller
12 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I was very pleased with this. Overall performance, he did a wonderful job
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Robbie Herrera profile picture
Robbie Herrera
9 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Scheduled maintenance performed by Jesus Muñoz. Very personable, thorough, and on time. He explained everything step by step with before and after pictures. I’m very happy with his work.
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Lizette Vallejo profile picture
Lizette Vallejo
2 October 2026
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Juan did a wonderful job
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Mary Cybelle Caldeo profile picture
Mary Cybelle Caldeo
29 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I found this company online when our AC suddenly stopped. We were fortunately able to get someone to stop by to take a look the same day. Sam was very kind and knowledgeable when finding the issue. When he told us that our old HVAC system served its time and needed a replacement, he came from a gentle approach to make sure he wasn’t forcing a sale on us. With his help and Mike’s approval, we were able to get an estimate that same day. Mike and Sam were very generous to give us some huge savings for a new HVAC system. I really appreciated Sam’s time to make sure we were all on the same page & answered all the questions we had. We were also able to get our new HVAC installed 2 days later. Benny and his team were very respectful and worked very fast. They made sure to wear their slip on booties to wear indoors and they also cleaned up their work area very well before leaving. I’m very new to using an energy efficient HVAC system, so I really appreciate them explaining how it works and answering all my questions. I’m very excited with the new smart thermostat as well! Thank you so much and I will make sure to recommend you all to family and friends!
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Julie Yu profile picture
Julie Yu
5 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Worked quickly and efficiently
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S Ng profile picture
S Ng
4 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Jesus did a good job. He gave options for us consider according to our condition.
Posted on Google Google
Terry B profile picture
Terry B
16 June 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Jesus did a great job and very professional completing the AC Tune up.
Posted on Google Google
Emily Cope profile picture
Emily Cope
16 June 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Smart Heating and Air Conditioning did great. I needed a new thermostat and they got it done quickly. Highly recommend.